Supplementary Figure 9: Principal-component analyses in the RADIOGEN cohort.

(a) Ancestry PCA in RADIOGEN. Black, green and red circles represent HapMap samples (HapMap r23a) of European, Asian and African descent, respectively. Blue circles represent RADIOGEN samples. One sample was excluded after ancestry PCA analysis. (b) PCA performed including only RADIOGEN samples beyond the boundaries of the main cluster (PC1 < −50, PC2 > 50 < −50) were removed from the analysis. Sixty-eight samples were excluded after this second PCA analysis.